I shoot briely spectrum IM out of lower barrel. Factory browning full on over barrel. Ultra XT 30" gun. I have used the lower barrel IM back to the 21y line where i am now. Seems to be working just fine. I will most likly stay with the IM till I see a drop in scores as I go back in yardage.

I have always shot between .030 and .043 for everything. I shot the .043 with an old TMI and got me to the 25 yd. line. Same old story, if you are on the target, they will break. I now shoot a Ljutic with a .033 choke for everything, and have always shot fixed choked guns. I also have a Perazzi MX10RS that is .031, cannot tell any difference in either choke. Both break the target with authority and smoke. Just my opinion. I do not believe in screw chokes. Thanks, Roy